Double check valve — A double check valve or double check assembly (DCA) is a backflow prevention device designed to protect water supplies from contamination. It is also a valve used in air brake systems on heavy trucks. Usage in Water Supply: In the case of usage… … Wikipedia
Chemigation valve — A chemigation valve is an apparatus designed to protect water supplies from agricultural chemicals used during chemigation, the application of chemicals such as fertilizers and pesticides through irrigation water. Most chemigation valves consist… … Wikipedia
Air gap (plumbing) — An air gap, as it relates to the plumbing trade, is the unobstructed vertical space between the water outlet and the flood level of a fixture.A simple example is the space between a wall mounted faucet and the sink rim (this space is the air gap) … Wikipedia
Atmospheric vacuum breaker — An Atmospheric Vacuum Breaker (AVB) is a backflow prevention device used in plumbing to prevent backflow of non potable liquids into the drinking water system. It is usually constructed of brass and resembles a 90 degree elbow with a hood on its… … Wikipedia
Pressure vacuum breaker — A Pressure Vacuum Breaker (PVB) is a type of backflow prevention device,used to keep non potable (or contaminated) water from entering the water supply. A PVB is similar to an atmospheric vacuum breaker (AVB), except that the PVB contains a… … Wikipedia
Reduced pressure backflow prevention assembly — A reduced pressure (RP) backflow prevention device is a device used to protect the potable water supply from contaminated water. An RP valve consists of an automatic pressure relief valve in between two check valves. The pressure relief valve… … Wikipedia
Continuously variable transmission — Transmission types Manual Sequential manual Non synchronous Preselector Automatic Manumatic Semi automatic Electrohydraulic Dual … Wikipedia
Hydraulic machinery — are machines and tools which use fluid power to do work. Heavy equipment is a common example.In this type of machine, high pressure hydraulic fluid is transmitted throughout the machine to various hydraulic motors and hydraulic cylinders. The… … Wikipedia
Autogas — is the common name for liquified petroleum gas (LPG) when it is used as a fuel in internal combustion engines in vehicles. The same equipment is also used for similar engines in stationary applications such as generators.Autogas is widely used as … Wikipedia
locomotion — /loh keuh moh sheuhn/, n. the act or power of moving from place to place. [1640 50; see LOCOMOTIVE, MOTION] * * * Any of various animal movements that result in progression from one place to another. Locomotion is classified as either… … Universalium
